CN102991339A - Cooling device and method of electric vehicle high-pressure parts - Google Patents
Cooling device and method of electric vehicle high-pressure parts Download PDFInfo
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- CN102991339A CN102991339A CN2012105534307A CN201210553430A CN102991339A CN 102991339 A CN102991339 A CN 102991339A CN 2012105534307 A CN2012105534307 A CN 2012105534307A CN 201210553430 A CN201210553430 A CN 201210553430A CN 102991339 A CN102991339 A CN 102991339A
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Abstract
The invention discloses a cooling device and a cooling method of electric vehicle high-pressure parts. The cooling device comprises a first temperature sensor, a whole vehicle controller, a control panel, an electric water pump, a shunt and a radiator, wherein the first temperature sensor is used for collecting the part temperatures of corresponding high-pressure parts, the whole vehicle controller is used for acquiring the part temperatures collected by the first temperature sensor and sending a control signal according to the part temperatures, the control panel is used for regulating the running speed of the electric water pump according to the control signal sent by the whole vehicle controller, the electric water pump is used for transporting cooling water to the shunt at the running speed, the shunt is used for shunting the cooling water transported by the electric water pump to cool the high-pressure parts on corresponding pipelines by utilizing the cooling waters which flow through different shunting pipelines and enable the cooling waters after converging to flow into the radiator after the cooling waters flowing through the shunting pipelines converge, and the radiator is used for cooling the influent cooling waters and transporting the cooling water after cooling into the electric water pump.
Description
Technical field
The present invention relates to the cooling technology field, relate in particular to a kind of cooling mechanism and cooling method of electric automobile high-voltage parts.
Background technology
Electronlmobil comprises hybrid vehicle and pure electric automobile, all need to configure the high pressure consumers such as motor, electric machine controller, DCDC conv, DCAC conv, battery, and these consumers power when work is larger, all produce power consumption, the energy that consumes mainly loses in the mode of heat energy, yet conventional air-cooled pattern can't satisfy the heat radiation needs under hot environment, dissipates quickly the heat of self for guaranteeing high voltage component, generally adopts the water-cooled pattern.
Because each high voltage component is different to requirement and the heat radiation situation of parts own of ambient temperature, so each high voltage component cooling is imported and exported diameter and is not quite similar, and difference is very large, wherein, motor, electric machine controller cooling duct diameter are about 20mm, DCDC, DCAC power are less, and the cooling duct diameter is about 10mm, and battery cooling duct diameter is about 25mm.
In order to solve the heat dissipation problem of each high voltage component, prior art is according to the difference of pipe diameter, be separately motor, electric machine controller design one cover cooling system, it is separately DCDC, DCAC design one cover cooling system, and be separately battery design one cover cooling system, and each system all configures cooling water pump, radiator-water box (integration fan), expansion tank, pipeline, circuit and switch etc.But, though be respectively motor and electric machine controller, DCDC and the part designs such as DCAC, battery independently cooling system can guarantee the normal operation of each parts, but greatly increased the electronlmobil cooling module, three overlap independently, and cooling system moves simultaneously, system complex and unstable, fault rate is high and energy consumption is high, has greatly limited using and developing of electronlmobil.
In addition, also propose in the prior art cooling line of motor, electric machine controller, DCDC, DCAC, each assembly of battery is together in series, adopt same set of cooling system, but owing to the variation of not considering each assembly cooling duct import and export vary in diameter, assembly cooling requirement lacks operational feasibility.For example, motor, electric machine controller heat dissipation capacity are larger, therefore require coolant flow rate larger, and flow velocity rose very large when the refrigerant fluid of large flow was flowed through the diameter smaller conduit, pressure loss in duct increases greatly, and does not also need the refrigerant fluid of large flow for DCDC, device that the DCAC heat dissipation capacity is less.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of cooling mechanism and cooling method of electric automobile high-voltage parts, to realize the purpose of simple efficiently cooling high voltage component.
For achieving the above object, the invention provides a kind of cooling mechanism of electric automobile high-voltage parts, comprise: at least one first temperature sensor, diverter with at least two distribution pipelines, be connected electric water pump with described diverter water inlet, respectively with described diverter water outlet be connected the radiator that electric water pump is connected, the control desk and the entire car controller that are connected with described electric water pump;
Described the first temperature sensor is for the part temperatures that gathers corresponding high voltage component;
Described entire car controller is used for obtaining the part temperatures that described the first temperature sensor gathers, and transmits control signal according to described part temperatures;
Described control desk is for the operating speed of regulating described electric water pump according to the control signal of described entire car controller transmission;
Described electric water pump is used for carrying cooling water expansion tank to described diverter under described operating speed;
Described diverter, be used for the cooling water expansion tank that described electric water pump is carried is shunted, with flow through high voltage component on the corresponding pipeline of water quench of different distribution pipelines of utilization, and after converging the cooling water expansion tank of each distribution pipeline of flowing through, make the cooling water expansion tank after described converging flow into radiator;
Described radiator is used for cooling off the cooling water expansion tank of described inflow, and described cooled cooling water expansion tank is delivered to described electric water pump.
Preferably, in said apparatus, described high voltage component comprises DCDC conv, DCAC conv, electric machine controller, motor and battery, described diverter comprises the first distribution pipeline, the second distribution pipeline and the 3rd distribution pipeline, the diameter of described the first distribution pipeline is less than the diameter of described the second distribution pipeline, and the diameter of described the second distribution pipeline is less than the diameter of described the 3rd distribution pipeline;
Described the first distribution pipeline is used for cooling off successively described DCDC conv and described DCAC conv;
Described the second distribution pipeline is used for cooling off successively described electric machine controller and described motor;
Described the 3rd distribution pipeline is used for cooling off described battery.
Preferably, in said apparatus, the water inlet place of described the 3rd distribution pipeline is provided with electromagnetic valve;
Described electromagnetic valve is used for opening or closing described the 3rd distribution pipeline.
Preferably, in said apparatus, described the first TEMP implement body is used for gathering the part temperatures of described battery; Described entire car controller comprises:
The first judging unit is used for judging that whether the part temperatures of described battery is greater than the first setting threshold;
The first transmitting element when being used for the described part temperatures that obtains in described the first judgment unit judges greater than described the first setting threshold, sending speed-raising and controls signal to described control desk, and sends to open and control signal to described electromagnetic valve;
The second transmitting element is used for when the described part temperatures that described the first judgment unit judges obtains is not more than described the first setting threshold, sends deceleration control signal to described control desk, and sends the closing control signal to described electromagnetic valve.
Preferably, in said apparatus, described control desk specifically is used for controlling described electric water pump and operating at high velocity behind the speed-raising control signal that receives described the first transmitting element transmission; Behind the deceleration control signal that receives described the second transmitting element transmission, control described electric water pump and operate at low regime.
Preferably, in said apparatus, described electromagnetic valve, concrete being used for opened described the 3rd distribution pipeline when receiving the unlatching control signal of described the first transmitting element transmission; When receiving the closing control signal of described the second transmitting element transmission, block described the 3rd distribution pipeline.
Preferably, said apparatus also comprises: the second temperature sensor is connected in series in fan and relay between described radiator and the described entire car controller;
Described the second temperature sensor is for the leaving water temperature that gathers described diverter water outlet;
Described entire car controller also comprises:
The second judging unit is used for judging that whether the temperature out of described collection is greater than the second setting threshold;
The first control unit when being used for the leaving water temperature that obtains in described the second judgment unit judges greater than the second setting threshold, utilizes described Control to open described fan, accelerates the temperature of cooling water expansion tank in the cooling radiator to utilize described fan;
The second control unit is used for utilizing described Control to close described fan when the leaving water temperature that described the second judgment unit judges obtains is not more than the second setting threshold.
The present invention also provides a kind of cooling method of electric automobile high-voltage parts, described method is applied to the cooling mechanism of electric automobile high-voltage parts, it is characterized in that, described device comprises: at least one first temperature sensor, diverter with at least two distribution pipelines, be connected electric water pump with described diverter water inlet, respectively with described diverter water outlet be connected the radiator that electric water pump is connected, the control desk and the entire car controller that are connected with described electric water pump; Described method comprises:
Converge the cooling water expansion tank of each distribution pipeline of flowing through and the cooling water expansion tank after described converging is delivered to radiator;
Control the cooling water expansion tank that described radiator cools off described inflow, and described cooled cooling water expansion tank is delivered to described electric water pump;
Utilize described the first temperature sensor to gather the part temperatures of corresponding high voltage component;
Utilize described entire car controller according to the operating speed of described part temperatures by control desk regulating electric water pump, so that described diverter utilizes the high voltage component of described electric water pump on the different distribution pipelines of the described diverter of the water quench of carrying under the described operating speed.
Preferably, in said method, described high voltage component comprises the DCDC conv, the DCAC conv, electric machine controller, motor and battery, described diverter comprises for the first distribution pipeline that cools off successively described DCDC conv and described DCAC conv, the 3rd distribution pipeline that is used for cooling off successively the second distribution pipeline of described electric machine controller and described motor and is used for cooling off described battery, the water inlet place of described the 3rd distribution pipeline is provided with electromagnetic valve, the diameter of described the first distribution pipeline is less than the diameter of described the second distribution pipeline, the diameter of described the second distribution pipeline is less than the diameter of described the 3rd distribution pipeline, and described the first TEMP implement body is used for gathering the part temperatures of described battery;
Describedly comprise according to the operating speed of described part temperatures by described control desk regulating electric water pump:
Judge that whether the part temperatures of described battery is greater than the first setting threshold;
If the part temperatures of described battery greater than described the first setting threshold, is then utilized described control desk to control described electric water pump and operated at high velocity, and control is opened described electromagnetic valve to open described the 3rd distribution pipeline;
If the part temperatures of described battery is not more than described the first setting threshold, then utilize described control desk to control described electric water pump and operate at low regime, and control is closed described electromagnetic valve to block described the 3rd distribution pipeline.
Preferably, said method also comprises:
Utilize the second temperature sensor to gather the leaving water temperature of described diverter water outlet;
If described leaving water temperature is greater than the second setting threshold, then described entire car controller utilizes Control to open the fan that is connected with described radiator, accelerates the temperature of cooling water expansion tank in the described radiator of cooling to utilize described fan;
If described leaving water temperature is not more than the second setting threshold, then described entire car controller utilizes Control to close the fan that is connected with described radiator.
The cooling mechanism of electric automobile high-voltage parts of the present invention and cooling method, according to the requirement of each high pressure consuming parts of electronlmobil to operating temperature, cooling when utilizing diverter to realize three road consumers, and because different pipeline diameters has been realized the control of cooling water flow, realized the effective cooling of the high-tension apparatus on each pipeline, and, fan start-stop control, pump rotary speed control, the functions such as electromagnetic valve open and close controlling have further improved the cooling performance of high voltage component, and this cooling mechanism is simple in structure, practical, avoided changing the flow losses that cause because of pipe diameter in the series connection type of cooling.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the cooling mechanism of electric automobile high-voltage parts of the present invention;
Fig. 2 is the structural representation of entire car controller in the cooling mechanism of electric automobile high-voltage parts of the present invention;
Fig. 3 is the schematic flow sheet of the cooling method of electric automobile high-voltage parts of the present invention.
The specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to shown in Figure 1, Fig. 1 is the cooling mechanism of a kind of electric automobile high-voltage parts provided by the invention, described device comprises: at least one first temperature sensor 1, diverter 2 with at least two distribution pipelines, be connected electric water pump 3 with described diverter 2 water inlets, respectively with described diverter 2 water outlets be connected the radiator 4 that electric water pump 3 is connected, the control desk 5 and the entire car controller 6 that are connected with described electric water pump 3;
Described the first temperature sensor 1 is for the part temperatures that gathers corresponding high voltage component;
Described entire car controller 6 is used for obtaining the part temperatures that described the first temperature sensor 1 gathers, and transmits control signal according to described part temperatures;
Described control desk 5 is for the operating speed of regulating described electric water pump 3 according to the control signal of described entire car controller 6 transmissions;
Described electric water pump 3 is used for carrying cooling water expansion tank to described diverter 2 under described operating speed;
Described diverter 2, be used for the cooling water expansion tank that described electric water pump 3 is carried is shunted, with flow through high voltage component on the corresponding pipeline of water quench of different distribution pipelines of utilization, and after converging the cooling water expansion tank of each distribution pipeline of flowing through, make the cooling water expansion tank after described converging flow into radiator 4;
Described radiator 4 is used for cooling off the cooling water expansion tank of described inflow, and described cooled cooling water expansion tank is delivered to described electric water pump.
Wherein, the high voltage component of electronlmobil comprises DCDC conv, DCAC conv, electric machine controller, motor and battery etc., in said apparatus, the first temperature sensor is mainly used in gathering the part temperatures of high voltage component, for the high voltage component that needs on the above-mentioned electronlmobil to dispel the heat, can first temperature sensor be installed at each high voltage component place, be respectively applied to gather the part temperatures of corresponding high voltage component, to obtain the temperature signal of each high voltage component.
Can draw three pipelines to the requirement of self temperature from diverter according to each high voltage component, be that described diverter comprises the first distribution pipeline, the second distribution pipeline and the 3rd distribution pipeline, the diameter of described the first distribution pipeline is less than the diameter of described the second distribution pipeline, and the diameter of described the second distribution pipeline is less than the diameter of described the 3rd distribution pipeline;
Described the first distribution pipeline is used for cooling off successively described DCDC conv and described DCAC conv;
Described the second distribution pipeline is used for cooling off successively described electric machine controller and described motor;
Described the 3rd distribution pipeline is used for cooling off described battery.
The high-temperature cooling water that the diverter water outlet compiles is after radiator carries out thermal exchange, cooling water expansion tank is become low temperature and be delivered to diverter under the powered of electric water pump by high temperature, diverter is drawn three pipelines, lead to respectively electric machine controller/motor, DCDC/DCAC, three different directions of battery, from the cooling water expansion tank of electric machine controller/motor, DCDC/DCAC, three directions of battery inflow radiator after diverter is joined again.
When high voltage component is worked, because heat radiation is not smooth, will cause part temperatures to rise rapidly, so require to guarantee the smooth heat radiation of high voltage component.The working environment requirement of motor, electric machine controller, DCDC conv, DCAC conv self temperature is more low better, part temperatures is lower, more can give play to the performance of these high voltage components, wherein the high voltage component such as battery has strict bound requirement to part temperatures, temperature can not be crossed low or too high, requires at present to guarantee that battery self temperature remains in-10 to 50 ℃ of scopes.
For the electronlmobil that comprises the high voltage components such as DCDC conv, DCAC conv, electric machine controller, motor and battery, can to the requirement of self operating temperature different distribution pipelines be set according to each high voltage component, wherein, because the DCDC conv is substantially suitable with DCAC conv operating temperature, maximum is in the scope of 80-90 degree, (as: the first distribution pipeline) cools off on the same distribution pipeline so DCDC conv and DCAC conv can be placed, and the cooling order of DCDC and DCAC is not done requirement; Because the heat dissipation capacity of electric machine controller and motor is larger, electric machine controller and motor can be placed that (as: the second distribution pipeline) cools off on the same distribution pipeline, wherein, electric machine controller requires higher to operating temperature, (maximum operating temperature of motor is approximately 120 degree to require lower operating temperature compared to motor, the operating temperature of electric machine controller is approximately the 80-90 degree), so need at first electric machine controller to be cooled off, recycle on this shunting pipeline the cooled water quench motor of electric machine controller; Because battery is comparatively strict to operating temperature, need to remain on-10-50 ℃ scope in, need lower operating temperature compared to other high voltage component, therefore, can utilize the independent cool batteries of cooling water expansion tank on the 3rd distribution pipeline.
In addition, because the heat radiation situation of high voltage component is different, cooling is required also difference, so the pipeline diameter of each distribution pipeline is also different.Because the power of DCDC conv and DCAC conv is less, heat dissipation capacity is less, can design less pipeline diameter (for example: the first distribution pipeline diameter that conv is corresponding is about 10mm), utilize on first distribution pipeline of flowing through relatively less cooling water expansion tank just can realize cooling off requirement; Battery for cooling is had relatively high expectations needs relatively large pipeline diameter (for example: the 3rd distribution pipeline diameter that battery is corresponding is about 25mm); And operating temperature requires between the electric machine controller between the two and motor, and pipeline diameter is between above-mentioned two pipelines (for example: the second distribution pipeline diameter is about 20mm) also
In addition, the water inlet place of described the 3rd distribution pipeline is provided with electromagnetic valve 7; Described electromagnetic valve is used for opening or closing described the 3rd distribution pipeline.Because to the having relatively high expectations of battery temperature, can not be too high can not be excessively low, can be by the order of entire car controller fire switch in order to open or to close the battery cooling duct by electromagnetic valve, so that the part temperatures of battery is controlled in the setting range all the time.Specific implementation is as follows:
Utilize described the first temperature sensor to gather the part temperatures of described battery, described entire car controller 6 comprises:
The first judging unit 61 is used for judging that whether the part temperatures of described battery is greater than the first setting threshold;
The first transmitting element 62 is used for sending speed-raising and controlling signal to described control desk when described the first judging unit 61 judges that the described part temperatures that obtains is greater than described the first setting threshold, and sends to open and control signal to described electromagnetic valve;
The second transmitting element 63 is used for sending deceleration control signal to described control desk, and sending the closing control signal to described electromagnetic valve when described the first judging unit 62 judges that the described part temperatures that obtains is not more than described the first setting threshold.
Described control desk 5 specifically is used for controlling described electric water pump and operating at high velocity behind the speed-raising control signal that receives 62 transmissions of described the first transmitting element; Behind the deceleration control signal that receives 63 transmissions of described the second transmitting element, control described electric water pump and operate at low regime.
Described electromagnetic valve 7, concrete being used for opened described the 3rd distribution pipeline when receiving the unlatching control signal of described the first transmitting element 62 transmissions; When receiving the closing control signal of described the second transmitting element 63 transmissions, block described the 3rd distribution pipeline.
As seen, when ambient temperature was low, cooling water pump operated at low regime, and the ducted electromagnetic valve of battery is in closed condition simultaneously, and at this moment, system cools water after the polymerization, flows into respectively electric machine controller/motor conduit and DCDC/DCAC pipeline in pressure stabilizing cavity.Different because of pipe diameter, therefore the cooling water flow of electric machine controller/motor drive direction has satisfied the radiating requirements of high pressure consumer different capacity section greater than the DCDC/DCAC direction under same pressure differential.When ambient temperature was higher, cooling water pump operated at high velocity, and the ducted electromagnetic valve of battery is in opening simultaneously.For motor, electric machine controller, DCDC, DCAC, battery cool off, the cooling water pump flow of high-speed operation can satisfy the radiating requirements of all consumers to cooling water expansion tank simultaneously at this moment.The battery cooling water flow depends on battery direction pipe diameter, can mate design according to actual needs.
In addition, the cooling mechanism of above-mentioned electric automobile high-voltage parts also comprises: be connected in series in relay 8 and fan 9 between described radiator 4 and the described entire car controller 6, and the second temperature sensor 11; Described the second temperature sensor 11 is for the leaving water temperature that gathers described diverter 2 water outlets;
Described entire car controller 6 also comprises:
The second judging unit 64 is used for judging that whether the temperature out of described the second temperature sensor 11 collections is greater than the second setting threshold (for example: greater than 40 ℃);
The first control unit 65 is used for utilizing described relay 8 controls to open described fan 9 when described the second judging unit 64 judges that the leaving water temperature that obtains is greater than the second setting threshold, accelerates the temperature of cooling water expansion tank in the cooling radiators 4 to utilize described fan 9;
The second control unit 66 is used for utilizing described relay 8 controls to close described fan 9 when described the second judging unit 64 judges that the leaving water temperature that obtains is not more than the second setting threshold (for example: be less than or equal to 40 ℃).
Because the cooling water expansion tank of electronlmobil inside is recycle, so when the leaving water temperature of diverter water outlet is higher, the fan that need to be integrated on the radiator accelerates cooling to the cooling water expansion tank in the radiator, namely when cooling water temperature surpasses the second setting threshold (such as 40 ℃), entire car controller HCU control fan is opened, and accelerates the cooling water expansion tank heat radiation.
The cooling mechanism of electric automobile high-voltage parts of the present invention, according to the requirement of each high pressure consuming parts of electronlmobil to operating temperature, cooling when utilizing diverter to realize three road consumers, and because different pipeline diameters has been realized the control of cooling water flow, realized the effective cooling of the high-tension apparatus on each pipeline, and, fan start-stop control, pump rotary speed control, the functions such as electromagnetic valve open and close controlling have further improved the cooling performance of high voltage component, and this cooling mechanism is simple in structure, practical, avoided changing the flow losses that cause because of pipe diameter in the series connection type of cooling.
Referring to shown in Figure 3, Fig. 3 is the cooling method of a kind of electric automobile high-voltage parts provided by the invention, described method is applied to the cooling mechanism of electric automobile high-voltage parts, described device comprises: at least one first temperature sensor, diverter with at least two distribution pipelines, be connected electric water pump with described diverter water inlet, respectively with described diverter water outlet be connected the radiator that electric water pump is connected, the control desk and the entire car controller that are connected with described electric water pump; Described method comprises:
S301: converge the cooling water expansion tank of each distribution pipeline of flowing through and the cooling water expansion tank after described converging is delivered to radiator;
S302: control the cooling water expansion tank that described radiator cools off described inflow, and described cooled cooling water expansion tank is delivered to described electric water pump;
S303: utilize described the first temperature sensor to gather the part temperatures of corresponding high voltage component;
S304: utilize entire car controller according to the part temperatures of the described high voltage component operating speed by control desk regulating electric water pump, so that described diverter utilizes the high voltage component of described electric water pump on the different distribution pipelines of the described diverter of the water quench of carrying under the described operating speed.
Wherein, described high voltage component comprises the DCDC conv, the DCAC conv, electric machine controller, motor and battery, described diverter comprises for the first distribution pipeline that cools off successively described DCDC conv and described DCAC conv, the 3rd distribution pipeline that is used for cooling off successively the second distribution pipeline of described electric machine controller and described motor and is used for cooling off described battery, the water inlet place of described the 3rd distribution pipeline is provided with electromagnetic valve, the diameter of described the first distribution pipeline is less than the diameter of described the second distribution pipeline, the diameter of described the second distribution pipeline is less than the diameter of described the 3rd distribution pipeline, and described the first TEMP implement body is used for gathering the part temperatures of described battery;
The step of " according to the part temperatures of the described high voltage component operating speed by described control desk regulating electric water pump " among the specific implementation above-mentioned steps S302 comprising:
Judge that whether the part temperatures of described battery is greater than the first setting threshold;
If the part temperatures of described battery greater than described the first setting threshold, is then utilized described control desk to control described electric water pump and operated at high velocity, and control is opened described electromagnetic valve to open described the 3rd distribution pipeline; If the part temperatures of described battery is not more than described the first setting threshold, then utilize described control desk to control described electric water pump and operate at low regime, and control is closed described electromagnetic valve to block described the 3rd distribution pipeline.
In addition, said method also comprises:
Utilize the second temperature sensor to gather the leaving water temperature of described diverter water outlet;
If described leaving water temperature is greater than the second setting threshold, then described entire car controller utilizes Control to open the fan that is connected with described radiator, accelerates the temperature of cooling water expansion tank in the described radiator of cooling to utilize described fan; If described leaving water temperature is not more than the second setting threshold, then described entire car controller utilizes Control to close the fan that is connected with described radiator.
The cooling method of electric automobile high-voltage parts of the present invention, according to the requirement of each high pressure consuming parts of electronlmobil to operating temperature, cooling when utilizing diverter to realize three road consumers, and because different pipeline diameters has been realized the control of cooling water flow, realized the effective cooling of the high-tension apparatus on each pipeline, and, fan start-stop control, pump rotary speed control, the functions such as electromagnetic valve open and close controlling have further improved the cooling performance of high voltage component, and this cooling mechanism is simple in structure, practical, avoided changing the flow losses that cause because of pipe diameter in the series connection type of cooling.
Also need to prove, in this article, relational terms such as the first and second grades only is used for an entity or operation are separated with another entity or operational zone, and not necessarily requires or hint and have the relation of any this reality or sequentially between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby not only comprise those key elements so that comprise process, method, article or the equipment of a series of key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.In the situation that not more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, in other embodiments realization.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. the cooling mechanism of electric automobile high-voltage parts, it is characterized in that, comprise: at least one first temperature sensor, diverter with at least two distribution pipelines, be connected electric water pump with described diverter water inlet, respectively with described diverter water outlet be connected the radiator that electric water pump is connected, the control desk and the entire car controller that are connected with described electric water pump;
Described the first temperature sensor is for the part temperatures that gathers corresponding high voltage component;
Described entire car controller is used for obtaining the part temperatures that described the first temperature sensor gathers, and transmits control signal according to described part temperatures;
Described control desk is for the operating speed of regulating described electric water pump according to the control signal of described entire car controller transmission;
Described electric water pump is used for carrying cooling water expansion tank to described diverter under described operating speed;
Described diverter, be used for the cooling water expansion tank that described electric water pump is carried is shunted, with flow through high voltage component on the corresponding pipeline of water quench of different distribution pipelines of utilization, and after converging the cooling water expansion tank of each distribution pipeline of flowing through, make the cooling water expansion tank after described converging flow into radiator;
Described radiator is used for cooling off the cooling water expansion tank of described inflow, and described cooled cooling water expansion tank is delivered to described electric water pump.
2. device according to claim 1, it is characterized in that, described high voltage component comprises DCDC conv, DCAC conv, electric machine controller, motor and battery, described diverter comprises the first distribution pipeline, the second distribution pipeline and the 3rd distribution pipeline, the diameter of described the first distribution pipeline is less than the diameter of described the second distribution pipeline, and the diameter of described the second distribution pipeline is less than the diameter of described the 3rd distribution pipeline;
Described the first distribution pipeline is used for cooling off successively described DCDC conv and described DCAC conv;
Described the second distribution pipeline is used for cooling off successively described electric machine controller and described motor;
Described the 3rd distribution pipeline is used for cooling off described battery.
3. device according to claim 2 is characterized in that, the water inlet place of described the 3rd distribution pipeline is provided with electromagnetic valve;
Described electromagnetic valve is used for opening or closing described the 3rd distribution pipeline.
4. device according to claim 3 is characterized in that, described the first TEMP implement body is used for gathering the part temperatures of described battery; Described entire car controller comprises:
The first judging unit is used for judging that whether the part temperatures of described battery is greater than the first setting threshold;
The first transmitting element when being used for the described part temperatures that obtains in described the first judgment unit judges greater than described the first setting threshold, sending speed-raising and controls signal to described control desk, and sends to open and control signal to described electromagnetic valve;
The second transmitting element is used for when the described part temperatures that described the first judgment unit judges obtains is not more than described the first setting threshold, sends deceleration control signal to described control desk, and sends the closing control signal to described electromagnetic valve.
5. device according to claim 4 is characterized in that, described control desk specifically is used for controlling described electric water pump and operating at high velocity behind the speed-raising control signal that receives described the first transmitting element transmission; Behind the deceleration control signal that receives described the second transmitting element transmission, control described electric water pump and operate at low regime.
6. device according to claim 4 is characterized in that, described electromagnetic valve, and concrete being used for opened described the 3rd distribution pipeline when receiving the unlatching control signal of described the first transmitting element transmission; When receiving the closing control signal of described the second transmitting element transmission, block described the 3rd distribution pipeline.
7. device according to claim 1 is characterized in that, described device also comprises: the second temperature sensor is connected in series in fan and relay between described radiator and the described entire car controller;
Described the second temperature sensor is for the leaving water temperature that gathers described diverter water outlet;
Described entire car controller also comprises:
The second judging unit is used for judging that whether the temperature out of described collection is greater than the second setting threshold;
The first control unit when being used for the leaving water temperature that obtains in described the second judgment unit judges greater than the second setting threshold, utilizes described Control to open described fan, accelerates the temperature of cooling water expansion tank in the cooling radiator to utilize described fan;
The second control unit is used for utilizing described Control to close described fan when the leaving water temperature that described the second judgment unit judges obtains is not more than the second setting threshold.
8. the cooling method of electric automobile high-voltage parts, described method is applied to the cooling mechanism of electric automobile high-voltage parts, it is characterized in that, described device comprises: at least one first temperature sensor, diverter with at least two distribution pipelines, be connected electric water pump with described diverter water inlet, respectively with described diverter water outlet be connected the radiator that electric water pump is connected, the control desk and the entire car controller that are connected with described electric water pump; Described method comprises:
Converge the cooling water expansion tank of each distribution pipeline of flowing through and the cooling water expansion tank after described converging is delivered to radiator;
Control the cooling water expansion tank that described radiator cools off described inflow, and described cooled cooling water expansion tank is delivered to described electric water pump;
Utilize described the first temperature sensor to gather the part temperatures of corresponding high voltage component;
Utilize described entire car controller according to the operating speed of described part temperatures by control desk regulating electric water pump, so that described diverter utilizes the high voltage component of described electric water pump on the different distribution pipelines of the described diverter of the water quench of carrying under the described operating speed.
9. device according to claim 8, it is characterized in that, described high voltage component comprises the DCDC conv, the DCAC conv, electric machine controller, motor and battery, described diverter comprises for the first distribution pipeline that cools off successively described DCDC conv and described DCAC conv, the 3rd distribution pipeline that is used for cooling off successively the second distribution pipeline of described electric machine controller and described motor and is used for cooling off described battery, the water inlet place of described the 3rd distribution pipeline is provided with electromagnetic valve, the diameter of described the first distribution pipeline is less than the diameter of described the second distribution pipeline, the diameter of described the second distribution pipeline is less than the diameter of described the 3rd distribution pipeline, and described the first TEMP implement body is used for gathering the part temperatures of described battery;
Describedly comprise according to the operating speed of described part temperatures by described control desk regulating electric water pump:
Judge that whether the part temperatures of described battery is greater than the first setting threshold;
If the part temperatures of described battery greater than described the first setting threshold, is then utilized described control desk to control described electric water pump and operated at high velocity, and control is opened described electromagnetic valve to open described the 3rd distribution pipeline;
If the part temperatures of described battery is not more than described the first setting threshold, then utilize described control desk to control described electric water pump and operate at low regime, and control is closed described electromagnetic valve to block described the 3rd distribution pipeline.
10. method according to claim 1 is characterized in that, described method also comprises:
Utilize the second temperature sensor to gather the leaving water temperature of described diverter water outlet;
If described leaving water temperature is greater than the second setting threshold, then described entire car controller utilizes Control to open the fan that is connected with described radiator, accelerates the temperature of cooling water expansion tank in the described radiator of cooling to utilize described fan;
If described leaving water temperature is not more than the second setting threshold, then described entire car controller utilizes Control to close the fan that is connected with described radiator.
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